web.xml中错误页面的配置

原文：https://blog.csdn.net/bao19901210/article/details/23370407

1.错误页面是html时的配置

<error-page>
    <error-code>403</error-code>
    <location>/403.html</location>
</error-page>
<error-page>
    <error-code>404</error-code>
    <location>/404.html</location>
</error-page>

2.错误页面时jsp时的配置

<error-page> 
    <error-code>500</error-code> 
    <location>/500.jsp</location> 
</error-page>

3.如果错误页面是jsp时，需要把该jsp文件的isErrorPage属性设置为true

<%@ page language="java" contentType="text/html; charset=UTF-8"  pageEncoding="UTF-8" isErrorPage="true"%>

4.jsp错误页面内如何获取异常信息并输出

<%@page import="java.io.PrintStream"%>
<%@page import="java.io.ByteArrayOutputStream"%>
<%@ include file="WEB-INF/views/includes/tags.jsp"%>
<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8" isErrorPage="true"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>500 服务器内部错误</title>
</head>
<body>
 <div class="ui-alert-panel">
        <h1>服务器内部错误</h1>
        <p>处理您的请求时发生错误！请确认您通过正确途径操作。</p>
 </div>
  <div style="display:none;">
  <%  //此处输出异常信息
      exception.printStackTrace();
      ByteArrayOutputStream ostr = new ByteArrayOutputStream();
      exception.printStackTrace(new PrintStream(ostr));
      out.print(ostr);
  %>
  </div>
</body>
</html>

原文地址：https://www.cnblogs.com/luna-hehe/p/14522442.html